const char* vertexShaderCode =
        "#version 330 core\r\n"
        ""
        "in layout(location=0) vec3 position;"
        ""
        "uniform mat4 projection;"
        ""
        "void main()"
        "{"
        "   gl_Position = projection * vec4(position, 1.0);"
        "}";

const char* fragmentShaderCode =
        "#version 330 core\r\n"
        ""
        "out vec4 daColor;"
        "uniform vec3 orgColor;"
        ""
        "void main()"
        "{"
        "   daColor = vec4(orgColor, 1.0);"
        "}";
